Charging method and charger

A charging method and charger technology, applied in the field of electronics, can solve problems such as short circuit of the charger, and achieve the effect of avoiding short circuit

Active Publication Date: 2013-03-27
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the current charger charges a high-current mobile phone, the current in the constant current phase of the charging process adopts a fixed high current v

Method used

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  • Charging method and charger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A charging method provided by an embodiment of the present invention, such as Figure 1.1 shown, including:

[0041] 101a. When charging the terminal with the current charging current, acquire a real-time charging voltage corresponding to the current charging current.

[0042] 102a. Determine whether the difference between the real-time charging voltage corresponding to the current charging current and the ideal charging voltage exceeds a preset voltage drop threshold.

[0043] The ideal charging voltage is the electromotive force provided by the charging power supply when the charging circuit is not connected to the load, and the voltage drop threshold is the maximum divided voltage value generated when the charger's maximum load current passes through the internal resistance of the charger.

[0044] 103a. If the difference between the real-time charging voltage corresponding to the current charging current and the ideal charging voltage exceeds the voltage drop thresh...

Embodiment 2

[0077] A charging method provided by the embodiment of the present invention, for the convenience of description, in the embodiment of the present invention, the charging current of the charger is set to three levels, which are respectively the first level charging current, the second level charging current and the third level charging current. level charging current. The charging method is as figure 2 shown, including:

[0078] 201. Charge the terminal in a trickle charging mode.

[0079] When the trickle charging makes the charging voltage reach the predetermined value of the constant current charging voltage, the constant current charging starts. Specifically, the following step 202 is first performed during constant current charging.

[0080] 202. Charge the terminal with the first-stage charging current.

[0081] 203. When charging the terminal with the first-level charging current, obtain the real-time charging voltage corresponding to the first-level charging curre...

Embodiment 3

[0113] A charger provided by an embodiment of the present invention, such as image 3 As shown, it includes: a charging unit 31 , a charging voltage acquisition unit 32 , a judging unit 33 , a charging current raising unit 34 and a charging current lowering unit 35 .

[0114] The charging unit 31 is configured to charge the terminal.

[0115] The charging voltage acquisition unit 32 is used to acquire the real-time charging voltage corresponding to the current charging current when the terminal is charged with the current charging current;

[0116] The judgment unit 33 is used to judge whether the difference between the real-time charging voltage corresponding to the current charging current and the ideal charging voltage exceeds a preset voltage drop threshold; wherein, the ideal charging voltage is provided by the charging power supply when the charging circuit is not connected to a load The electromotive force, the voltage drop threshold is the maximum partial voltage valu...

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PUM

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Abstract

The invention discloses a charging method and a charger, which relate to the electronic field and can adjust charging current of the charger in real time to avoid a short circuit of the charger. The charging method comprises the following steps of: setting multi-stage charging currents and acquiring a real-time charging voltage corresponding to the present charging current while charging a terminal with the present charging current; judging whether the difference value between the real-time charging voltage corresponding to the present charging current and an ideal charging voltage exceeds a voltage drop threshold value or not; boosting the charging current to the next-stage charging current when the difference value does not exceed the voltage drop threshold value; and reducing the charging current to the last-stage charging current for selecting appropriate charging current to charge the terminal when the difference value exceeds the voltage drop threshold value. The charging method and the charger are mainly used for charging the terminal.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a charging method and a charger. Background technique [0002] With the rapid development of electronic technology, the speed of upgrading electronic products is also accelerating. Most electronic products need to be charged to maintain their normal operation during use. [0003] In the prior art, charging of mobile phones basically adopts fixed current charging, and the charging process of fixed current can be divided into three stages: trickle charging, constant current charging and constant voltage charging. First, trickle charging is adopted; when the trickle charging makes the charging voltage reach the predetermined value of the constant current charging voltage, constant current charging is adopted; when the constant current charging makes the charging voltage reach the predetermined value of the constant voltage charging voltage, constant voltage charging is adopted. For exam...

Claims

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Application Information

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IPC IPC(8): H01M10/44H02J7/00
CPCY02E60/12H01M10/44H02J7/00Y02E60/10H02J7/007182
Inventor 王伟杰
Owner HUAWEI DEVICE CO LTD
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